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3 Commits

Author SHA1 Message Date
Matt Arsenault 6bc43d8627 BranchRelaxation: Support expanding unconditional branches 
AMDGPU needs to expand unconditional branches in a new
block with an indirect branch.

llvm-svn: 283464
 2016-10-06 16:20:41 +00:00
Matt Arsenault 5d8eb25e78 AMDGPU: Use unsigned compare for eq/ne 
For some reason there are both of these available, except
for scalar 64-bit compares which only has u64. I'm not sure
why there are both (I'm guessing it's for the one bit inputs we
don't use), but for consistency always using the
unsigned one.

llvm-svn: 282832
 2016-09-30 01:50:20 +00:00
Matt Arsenault 701c21ea10 AMDGPU: Fix crash with unreachable terminators. 
If a block has no successors because it ends in unreachable,
this was accessing an invalid iterator.

Also stop counting instructions that don't emit any
real instructions.

llvm-svn: 268119
 2016-04-29 21:52:13 +00:00